• APS-C 368.2mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • APS-H 476.1mm2
  • 25.6 megapixels
  • ISO 100 - 6400

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Differences

Pentax K20D advantages over Sigma sd Quattro H

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Less expensive
    $800 vs $1200 (MSRP)
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.05 vs 4.30 microns
    Better low-light and dynamic range (all else equal)
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera

Sigma sd Quattro H advantages over Pentax K20D

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-H vs APS-C
    More sensor area. Bigger is (generally) better.
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Newer
    8 years vs 17 years old
    Newer cameras often support more advanced features
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • More dots on screen
    1620k vs 230k dots
    Can mean greater resolution or a brighter screen
  • More viewfinder magnification
    0.74x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    25.6 vs 14.6 megapixels
    Higher resolution photos
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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All sd Quattro H Deals

Review Excerpt

The Competition

Compared to Samsung GX-20

Pentax K20D
Samsung GX-20
  • $800
  • APS-C
  • Less expensive
  • $1400
  • APS-C
  • Higher effective ISO

Compare Pentax K20D vs Samsung GX-20

Sigma sd Quattro H
Samsung GX-20
  • $1199
  • APS-H
  • Less expensive
  • Focus peaking
  • $1400
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sigma sd Quattro H vs Samsung GX-20

Compared to Sony DSLR-A380

Pentax K20D
Sony DSLR-A380
  • $800
  • APS-C
  • Lens selection
  • Fast startup
  • $849
  • APS-C
  • Tiltable Screen
  • HDMI out

Compare Pentax K20D vs Sony DSLR-A380

Sigma sd Quattro H
Sony DSLR-A380
  • $1199
  • APS-H
  • Focus peaking
  • Larger sensor
  • $849
  • APS-C
  • Lens selection
  • Less expensive

Compare Sigma sd Quattro H vs Sony DSLR-A380

Compared to Pentax K-7

Pentax K20D
Pentax K-7
  • $800
  • APS-C
  • Less expensive
  • Fast startup
  • $1300
  • APS-C
  • Longer stills battery life
  • HDMI out

Compare Pentax K20D vs Pentax K-7

Sigma sd Quattro H
Pentax K-7
  • $1199
  • APS-H
  • Focus peaking
  • Larger sensor
  • $1300
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sigma sd Quattro H vs Pentax K-7

Compared to Sigma sd Quattro

Pentax K20D
Sigma sd Quattro
  • $800
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $699
  • APS-C
  • Focus peaking
  • On-sensor phase detect

Compare Pentax K20D vs Sigma sd Quattro

Sigma sd Quattro H
Sigma sd Quattro
  • $1199
  • APS-H
  • Larger sensor
  • More pixels
  • $699
  • APS-C
  • Bigger RAW buffer

Compare Sigma sd Quattro H vs Sigma sd Quattro

Compared to Fujifilm X-H1

Pentax K20D
Fujifilm X-H1
  • $800
  • APS-C
  • Lens selection
  • Bigger pixels
  • $1199
  • APS-C
  • Focus peaking
  • Shoot 4K video

Compare Pentax K20D vs Fujifilm X-H1

Sigma sd Quattro H
Fujifilm X-H1
  • $1199
  • APS-H
  • Larger sensor
  • More dots on screen
  • $1199
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization

Compare Sigma sd Quattro H vs Fujifilm X-H1

Compare Other Cameras?